A ccurate N uclear D ata for nuclear E nergy S ustainability A ccurate N uclear D ata for nuclear E nergy S ustainability ANDES - WP4 High energy model validation in the 150-600 MeV domain 1 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for nuclear E nergy S ustainability WP4 - High energy model validation in the 150-600 MeV domain ADS as an option to reduce minor actinides amounts in dedicated systems ADS demonstrator: MYRRHA : 600 MeV - 2.5 mA or 350 MeV - 5 mA proton beam onto a liquid Pb-Bi spallation target Necessity of reliable and validated simulation tools 2 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for A ccurate N uclear D ata for nuclear E nergy S ustainability nuclear E nergy S ustainability WP4 - High-energy model validation in the 150-600 MeV domain General objectives: To identify remaining deficiencies and not understood features of the nuclear models used in high-energy transport codes between 150 and 600 MeV to use/do a few specific experiments to solve the identified problems to further improve the models to do a few specific integral validation experiments to assess the uncertainty with which quantities related to high-energy reactions can be predicted 3 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for nuclear E nergy S ustainability WP4 - High-energy model validation in the 150-600 MeV domain Task 4.1: State-of-the-art of high-energy model predicting capability in the 150-600 MeV domain (CEA/DSM, ULG, GSI, USC) Task 4.2: SPALADIN p+Pb at 500 MeV : measurement of the fission fragments and light evaporation residues in coincidence with light ions (USC, CEA/DSM, GSI) Task 4.3: Measurement of neutron-induced light ion cross-sections at 175 MeV on Fe, Bi and U (UU, CNRS/Caen) Task 4.4: Improving of the predicting capabilities of the simulation tools in the 150-600 MeV in order to reduce the uncertainties on key parameters of the demonstration facility spallation target (ULG, CEA/DSM, GSI, CEA/DAM, NRG) Task 4.5: Validation on the results from the post irradiation analysis of MEGAPIE samples (PSI, CEA/DSM) 4 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for nuclear E nergy S ustainability Task 4.1: State-of-the-art of high-energy model predicting capability in the 150-600 MeV domain (CEA/DSM, ULG, GSI, USC) • use of conclusions of the Benchmark of Spallation models presently organized by IAEA + specific comparisons of the models to the available elementary data (from HINDAS and NUDATRA) in the 150-600 MeV energy domain • Assessment of uncertainties on key parameters resulting from the uncertainties in the models key parameters : spallation neutron yield, total and major contributors to activity of the target and structure materials, production rate of helium and radioactive gases… Discussion with end-users (MYRRHA), in order to define on which points the effort on model improvement should be focused 5 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for nuclear E nergy S ustainability Task 4.1: State-of-the-art of high-energy model predicting capability in the 150-600 MeV domain (CEA/DSM, ULG, GSI, USC) • Experimental data available in the 150-600 MeV range Data used in the IAEA benchmark of spallation models Proton production : p 300 and 392 MeV on different targets, Kin et al., PRC 72, 014606 (2005), Iwamoto et al., PRC 82, 034604 (2010) LCPs and IMFs : p + Al, Co, and Au 200 MeV, Machner et al., PRC 73, 044606 (2006), p + Al, Ag, Au 200 MeV, Ginger et al., PRC 78, 034601 (2008) 6 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for nuclear E nergy S ustainability Task 4.2: p+Pb at 500 MeV: measurement of the fission fragments and evaporation residues in coincidence with light ions (USC, GSI, CEA/DAM, CEA/DSM) Importance of predicting gases from the liquid target: He, t, volatile elements from fission, Hg Discrepancies between different sets of data, difficulty for models to predict data at different energies Experiment at GSI on Pb+p at 500 MeV Total fission cross-sections charge distribution helium and IMF (Be) production XS Foreseen May 2012 7 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for nuclear E nergy S ustainability Task 4.3: Measurement of neutron-induced light ion cross- sections at 175 MeV on Fe, Bi and U (UU, CNRS/Caen) Importance of predicting light ion cross-sections (helium, tritium) Data around 150-200 MeV scarce, region between data library and nuclear models experiment at TSL (Uppsala) with the MEDLEY set-ups on n+Fe, Bi, U at 175 MeV (Done Autumn 2009) Transparencies from R. Bevilacqua 8 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
Light Charged Particles production from Fe and Bi induced by intermediate energy neutrons Medley Setup at the The Svedberg Laboratory, Uppsala Medley: Spectrometer system for detection of Light Charged Particles (LCP); ΔE -E for particle identification and kinetic energy measurement. The Svedberg Laboratory: quasi-monoenergetic neutron beam; neutron energy peak at 175 MeV Before TOF After TOF TOF cut to reduce contribution of low energy tail : 50% peak @ 175 MeV 50% tail down to 85 MeV
Light Charged Particles production from Fe and Bi induced by intermediate energy neutrons Status February 2009: Experimental run – LCP production from Fe and Bi Preliminary double differential cross sections: October 2009, CNR*09: oral presentation (proton, deuteron, triton production) April 2010, ND2010 Conference: oral presentation (all LCPs, i.e. p,d,t, 3 He, 4 He) June 2010, INPC2010 Conference: poster presentation (complex particles production) November 2010, Atomic Energy Society of Japan, Symposium on Nuclear Data: invited talk Papers: Bevilacqua R. et al., Radiation Measurements (2010) doi:10.1016/j.radmeas.2010.06.034 (preliminary hydrogen isotopes production)
DDX for light-ion production from Fe and Bi at 175 MeV (20 deg) DDX were produced for 8 emission angles (20, 40, 60, 80, 100, 120, 140, 160 deg)
Exciton Model with Kalbach fails to reproduce new data at 175 MeV for complex particles production (d,t, 3 He, 4 He) (calculations with TALYS-1.2) EXCITON and EXCITON and EXCITON proton production at 175 MeV (not reported) is well reproduced
Outlook A paper to be submitted to NIM A on Medley is under preparation (in writing) Analysis of cross section data for Fe and Bi at 175 MeV is in its final stage. Current focus of research: - study of pre-equilibrium emission of complex particles with a phase space statistical approach: Exciton model and Kalbach systematics (with TALYS code) - microscopic simulation approach: Quantum Molecular Dynamics (QMD) with Surface Coalescence Method (SCM) – in collaboration with Kyushu University
A ccurate N uclear D ata for nuclear E nergy S ustainability Task 4.4: Improving of the predicting capabilities of the models in the 150-600 MeV in order to reduce the uncertainties on key parameters of the demonstration facility spallation target (ULG, CEA/DSM, GSI, CEA/DAM, NRG) Objective: reduction of the model deficiencies identified in Task 4.1 Sub-task 4.4.1: Improving the high-energy models Sub-task 4.4.2: High-Energy Evaluated Nuclear Data Files generated from the TALYS+BRIC reaction code as an alternative to models Implementation of the improved models or evaluated data files into standard high-energy transport codes and calculations of a real spallation target Assessment of the resulting improvement on the key parameters with the participation of end-users (MYRRHA) 14 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
A ccurate N uclear D ata for nuclear E nergy S ustainability Task 4.4: Improving of the predicting capabilities of the models in the 150-600 MeV in order to reduce the uncertainties on key parameters of the demonstration facility spallation target (ULG, CEA/DSM, GSI, CEA/DAM, NRG) Sub-task 4.4.1: Improving the high-energy models (ULG, CEA/DSM, GSI) Talk by Davide Mancusi with contribution from Valentina Ricciardi (GSI) Sub-task 4.4.2: Investigation of the possibility to use High- Energy Evaluated Nuclear Data Files generated from the TALYS+BRIC reaction codes (CEA/DAM, NRG) Validation against experimental data set used in Task 4.1 15 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010 Sylvie LERAY (CEA/Saclay) Paris, November 19, 2010
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